10% is the change from 660 to 726
Calculation steps:
[( 726 - 660 ) ÷ 660] x 100 = 10%
Formula
Percentage change = [(726 - 660) / 660] x 100
Subtract the new number by the original number
726 - 660 = 66
66 ÷ 660 = 0.1
0.1 x 100 = 10%
Example